Published date: Oct 12 2022

Journal Title: KnE Social Sciences

Issue title: 3rd International Conference on Geography and Education (ICGE)

Pages: 29–37

DOI: 10.18502/kss.v7i16.12150

Elsa Try Julita Sembiringelsa.try@podomorouniversity.ac.idUniversitas Agung Podomoro, Jl. Letjen S. Parman No.28 Grogol Petamburan, West Jakarta, Indonesia

Nilam Atsirina Khrisnaputri1Universitas Agung Podomoro, Jl. Letjen S. Parman No.28 Grogol Petamburan, West Jakarta, Indonesia

Pratama Haditua Reyner SiregarUniversitas Trisakti, Jl. Kyai Tapa No.1, Grogol Petamburan, West Jakarta, Indonesia

The habit of wasting water is widespread. One of the solutions is to “force” the consumer to conserve water by restricting the flow using a restrictor with the orifice principle. The aim of this study was to determine the performance of a restrictor in a pipeline model by defining the discharge coefficient obtained experimentally from the output discharge with or without the restrictor in static pressure water, and to examine the variation based on the tap opening. The restrictor had an opening at the center of the cylinder with a 2.5 mm diameter and it was installed in a water tap of 0.5 inches diameter based on the market. The effectiveness of the tool in reducing the water was determined by the discharge coefficient. Based on the results, it was found that the restrictor was capable of reducing the water discharge output by 60%-70% for discharge inputs ranging from 0.15 to 0.25 l/s. Moreover, the reduction for discharge inputs below 0.15 l/s resulted in an efficiency ranging from 30%-40%. The discharge output using the restrictor was approximately 0.06 to 0.07 l/s. The contraction coefficient and expansion coefficient were 1.720 (experimental) and 1.484 (theoretical).

Keywords: water wasting reduction, water restrictor, orifice principle, experimental approach

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